You can have a tree sprout when the user clicks on the Earth element, or you can show sea creatures swimming in the water element.

当用户点击地球元素的时候可以让树发芽，或者可以显示海洋生物在水元素中游泳。

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Water them. In several days, you can see a sprout.

给它们浇水。几天后，你就可以看见嫩芽了。

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Water them. In several days, you can see a sprout.

为它们浇水。几天后，你就可以看到嫩芽了。

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Having high expectations for even huge numbers of seeds to sprout when thrown on untilled land or clay, without any water, is probably going to lead to disappointment.

FORBES: Nurture Your Network